I ran into something that may or may not be a bug.
First of all: machine is G5 2.5, 2.5 GB ram, recording to the 160 GB internal drive
(I know they recommend recording to an external drive but I haven't been able to
afford it yet).
Session has 40 tracks (a lot admittedly). Stereo. So that would be 80 mono?
A mixture of audio tracks and software instruments.
Session will play correctly three quarters of the way thru (about 2 mins
and 40 seconds) then all sound goes dead and a loud click is heard, two
seconds later audio is restored.
At that point in the song, four of the software synths hit major polyphony.
I checked the tracks and removed some inaudible super deep bass parts.
Replayed back - Same issue occurs. It sounds as if a punch in occured over
all 80 tracks simultaneously with no sound and then punched out again. But
that didn't occur. It sounds different than the sound you get when the CPU
or disc bus gets maxed out by too many tracks/instruments.
Removed some doubling of the audible parts for the software instruments
and I figured it would help. Nope. Same issue occurs. Odd. The machine
doesn't freeze up, stays completely responsive - on-screen the led meters
keep going and the display indicating the track is playing continues as does
the time counter.
But: I highlighted the track where I believed the issue might be occurring
(since after this track was added the issue started happening) and the
problem went away and it played through uneventfully.
If I un-highlight this track, the issue continues. If it is highlighted, it stops.
Weird.
I realize that I'm probably going WAY beyond what Apple intended GB to be,
that I should use my big expensive music softwares to do this kind of thing
but I find GB great for quickly writing tunes - if I want to get something done
fast GB is the tool to use.